scripting a uniformly accelerating object

Submitted by veloci on Wed, 2015-11-18 05:03

Hi

I need some help scripting object motion.

I have values for ....

1. total distance travelled
2. travel direction
3. start speed
4. final speed
5. total time taken

.... and I need to position an object accordingly. The acceleration is uniform.

How would I go about this? How would I keep track of the current frame and velocity, increase it over time and relay it to object position until the final frame?

Thanks
Mark

‹ Mouse Hit Point - RayCast 1 ›

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veloci's picture
Submitted by veloci on Thu, 2015-11-19 01:18.

Thanks! I have a test working

Thanks!

I have a test working with this ....

dir = normalize ($Point002.pos - $Point001.pos)
for f = 1 to 90 do
(
currentVelocity = pflowFloatVelocity * 100
with animate on
(
slidertime = f
$Sphere001.pos += dir * currentVelocity
)
)

I'm pulling pflowFloatVelocity from the animated float channel in PFlow. It works fine.

roosterMAP's picture
Submitted by roosterMAP on Thu, 2015-11-19 00:55.

Not 100% sure, but this

Not 100% sure, but this should put you in the right direction...

a = ( v2 - v1 ) / t
a = acceleration
v2 = final speed
v1 = start speed
t = time

position on vector = v1 * t + ( a * t^2 ) / 2

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